Transcript for Best Deals May Be Found in Final Hours Before Christmas

And all of you who saved your holiday shopping for the last minute, take heart. It's worth driving the crowds because these final hours may offer the best deals. Abc's rebecca jarvis has the details. Reporter: Last-minute shoppers rejoice. This might be the year that procrastinators reap big rewards. Does it pay to procrastinate? It pays so well to procrastinate. Or it pays less because you're going to save so much. Reporter: Tomorrow is the biggest spending of the day of the year behind black friday. In-store sales are down slightly from last year. People are doing last-minute like me. And they need all the time they can get. Reporter: The national retail federation says the final two weeks of the year can make up as much as 30% of holiday sales. There's so much at stake, retailers are doing everything they can to pull the stragglers into their stores. This year, more retailers are using social media to remind shoppers that the clock is ticking. And for online shoppers, many retailers are offering free shipping, along with last-minute deals and discounts, up to 60% off. And in the last stretch, major chains, staying open around the clock. While some consider the longer store hours a blessing, others already suffering discount fatigue. Taking away christmas to me. It's not a christmas feel anymore. It's all money-based, unfortunately. That's what christmas has come to. All about the bottom line. Reporter: And if you do shop late, that is late at night, when it's not so busy in the stores, ask a sales associate if they can give you additional discounts. Chances are, you can get another 10% off. More than likely to do it if you ask nicely. Never stop bargaining. Never pays to be naughty, especially this time of the year. What do you have for us,

This transcript has been automatically generated and may not be 100% accurate.

Now Playing: 'Wired' Video Details How Hackers Can Take Control of Your Car

Now Playing: {{itm.title}}

{"id":21287005,"title":"Best Deals May Be Found in Final Hours Before Christmas ","duration":"3:00","description":"Procrastinators may reap the best rewards if they can brave the crowds and busy malls.","url":"/GMA/video/best-deals-found-final-hours-christmas-21287005","section":"GMA","mediaType":"Default"}